He is reading a book about demonology.

He is an expert in enzymology and conducts many researches.

He is an expert in oenology and has a deep knowledge of wines from around the world.

He is an expert in tidology, conducting research on ocean tides.

He is interested in ancient mathematics.

He is majoring in Japanology at university.

He learned about the structure of society in his civics class.

Eugenics is the science of improving human genetic qualities.

He is globally recognized as an expert in glaciology.

He is majoring in history at university.